Well, I just bought a couple of Tritium/fiber optic pins for my existing PSE sight. They are pretty durable, kind of like the Montana Black Gold pins, where the hollow between the black pin and the fiber is filled with a clear plastic fin to support it and make it less fragile.

They are from Tru-Glo, and they seem OK.
They are not as bright as the ones I've got on my home-defense handgun, but they'll do the job for a bow at dawn and dusk.
They are about $25 each and come in standards sizes.

I got 'em because last year I had to pass on a shot on a decent sized buck first thing after shooting time opened following a night with no moon. It was just to dark to see my pins. I could make him out, but not my pins. They got lost when I looked through my peep. This year, I've got the tritiums plus a full 1/4" peep with a white ring I painted around the edge. That ought to do it.


Good luck!

Keep 'em all in the Bull.